20341309 has 8 divisors (see below), whose sum is σ = 20574720. Its totient is φ = 20109600.

The previous prime is 20341303. The next prime is 20341313. The reversal of 20341309 is 90314302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20341309 - 2¹⁷ = 20210237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20341309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20341303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53482 + ... + 53860.

It is an arithmetic number, because the mean of its divisors is an integer number (2571840).

Almost surely, 2^20341309 is an apocalyptic number.

It is an amenable number.

20341309 is a deficient number, since it is larger than the sum of its proper divisors (233411).

20341309 is a wasteful number, since it uses less digits than its factorization.

20341309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 20341309 is about 4510.1340334850. The cubic root of 20341309 is about 272.9771523947.

The spelling of 20341309 in words is "twenty million, three hundred forty-one thousand, three hundred nine".